How do I find the area of a circle?

Question

If I have a circle with a radius of 8 how would I calculate the area. Please explain this so that I can understand. Thanks.

Answer 1

a=Pi r^2
a is area
Pi is 3.14
r is radius

so in your case, since the radius is 8
a=Pi*8^2
a=Pi*64
a=200.96

Comments

pi is 3.141592..... pi is an irrational number. haha

Answer 2

The area of a circle is given by the formula:

A = πr^2, so in this case we have;

A = π 8^2 = 64π

If you're supposed to use a particular approximation for pi, then just substitute that and multiply.

For example, if the instructions say to use 3.14 for pi, then

A = 64(3.14) = 200.96 approximately.

 

Hope that helps!

Answer 3

How do I find the area of a circle?

Answer 4

we know that area of a circle is pie*radius*radius hence area =22/7 *8*8 which is 201.142 square cm .... :) !

Answer 5

3896